byVasquez, R. P.; Rupp, M.; Gupta, A.; Tsuei, C. C
The electronic structure and chemical states of HgBa2CaCu20(sub 6 delta), epitaxial films have been studied with x-ray photelectron spectroscopy. Signals from the superconducting phase dominate all the core-level spectra, and a clear Fermi edge is observed in the valence-band region. The Ba, Ca, Cu, and O core levels are similar to those of Tl2Ba2CaCu208()O(sub 6 delta), but distinct differences are observed in the valence bands which are consistent with differences in the calculated densities... Topics: TILT ROTOR AIRCRAFT, COMPUTERIZED SIMULATION, AIRCRAFT CONFIGURATIONS, CROSS COUPLING, FLAPPING,...
Instructor: Russell Tedrake Robots today move far too conservatively, using control systems that attempt to maintain full control authority at all times. Humans and animals move much more aggressively by routinely executing motions which involve a loss of instantaneous control authority. Controlling nonlinear systems without complete control authority requires methods that can reason about and exploit the natural dynamics of our machines. This course discusses nonlinear dynamics and control of... Topics: underactuated robotics, actuated systems, nonlinear dynamics, simple pendulum, optimal control,...